138634177 has 12 divisors (see below), whose sum is σ = 154322560. Its totient is φ = 124427160.

The previous prime is 138634147. The next prime is 138634187. The reversal of 138634177 is 771436831.

It is not a de Polignac number, because 138634177 - 2²³ = 130245569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138634117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2308 + ... + 16810.

Almost surely, 2^138634177 is an apocalyptic number.

It is an amenable number.

138634177 is a deficient number, since it is larger than the sum of its proper divisors (15688383).

138634177 is a wasteful number, since it uses less digits than its factorization.

138634177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14604 (or 14593 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 138634177 is about 11774.3015504105. The cubic root of 138634177 is about 517.5553109761. Note that the first 3 decimals are identical.

The spelling of 138634177 in words is "one hundred thirty-eight million, six hundred thirty-four thousand, one hundred seventy-seven".